(单选题)

The word "outstanding" in the first letter, line 2 is closest in meaning to ( ).

A.superior

B.noticeable

C.unpaid

D.essential

参考答案：C

参考解析：

定位至I want to thank you for the conversation that we had earlier today and for agreeing to a reduction in payment for my outstanding account.可知这个词修饰的对象是“账单”。选项A：出众的、优秀的；选项B：显而易见的、显著的；选项C：未支付的；选项D：重要的、基本的。选项中能修饰账单的只有C项，outstanding account为专有名词：未清账目。故本题正确答案选C。

知识点：含义题英语阅读理解通用英语